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Relationship with Universal Health Realty Income Trust and Related Party Transactions - Additional Information (Detail) | 1 Months Ended | 3 Months Ended | 6 Months Ended | 12 Months Ended
--- | --- | --- | --- | ---
Jun. 30, 2016 USD ($) | Jun. 30, 2016 USD ($) | Jun. 30, 2015 USD ($) | Mar. 31, 2015 USD ($) Facility RenewalOption | Jun. 30, 2016 USD ($) Hospital RenewalOption | Jun. 30, 2015 USD ($) Hospital | Dec. 31, 2015 USD ($)
Chief Executive Officer |  |  |  |  |  |  |
Related Party Transaction [Line Items] |  |  |  |  |  |  |
Estimated payments to acquire life insurance policies |  |  |  |  | $ 25,000,000 |  |
Payments to acquire life insurance policies |  |  |  |  |  |  | $ 1,300,000
Chief Executive Officer | Trust Owned by CEO |  |  |  |  |  |  |
Related Party Transaction [Line Items] |  |  |  |  |  |  |
Estimated payments to acquire life insurance policies |  |  |  |  | $ 8,000,000 |  |
McAllen Medical Center |  |  |  |  |  |  |
Related Party Transaction [Line Items] |  |  |  |  |  |  |
Number of renewal options at existing lease rates | RenewalOption |  |  |  |  | 2 |  |
Renewal options term at existing lease rates | 5 years |  |  |  | 5 years |  |
Renewals extend lease terms at existing lease rates | 2021-12 |  |  |  | 2021-12 |  |
Wellington Regional Medical Center |  |  |  |  |  |  |
Related Party Transaction [Line Items] |  |  |  |  |  |  |
Renewal options term at fair market lease rates | 5 years |  |  |  | 5 years |  |
Renewals extend lease terms at existing lease rates | 2021-12 |  |  |  | 2021-12 |  |
Southwest Healthcare System, Inland Valley Campus |  |  |  |  |  |  |
Related Party Transaction [Line Items] |  |  |  |  |  |  |
Renewal options term at fair market lease rates | 5 years |  |  |  | 5 years |  |
Renewals extend lease terms at existing lease rates | 2021-12 |  |  |  | 2021-12 |  |
Minimum | Chief Executive Officer |  |  |  |  |  |  |
Related Party Transaction [Line Items] |  |  |  |  |  |  |
Estimated death benefit proceeds |  |  |  |  | $ 33,000,000 |  |
Relationship with Universal Health Realty Income Trust |  |  |  |  |  |  |
Related Party Transaction [Line Items] |  |  |  |  |  |  |
Trust outstanding shares held, percentage | 5.80% | 5.80% |  |  | 5.80% |  |
Advisory fee earned |  | $ 800,000 | $ 700,000 |  | $ 1,500,000 | $ 1,400,000 |
Pre-tax share of income from the Trust |  | 250,000 | 800,000 |  | 500,000 | 1,000,000 |
Carrying value of investment in Trust | $ 8,200,000 | 8,200,000 |  |  | 8,200,000 |  | 8,700,000
Market value of investment in Trust | $ 45,000,000 | 45,000,000 |  |  | 45,000,000 |  | $ 39,400,000
Rent expense under operating leases |  | $ 4,000,000 | $ 4,000,000 |  | $ 8,000,000 | $ 8,000,000 |
Non-controlling ownership interests by subsidiaries | 100.00% | 100.00% |  |  | 100.00% |  |
Number of hospital facilities | Hospital |  |  |  |  | 3 | 3 |
Lease renewal period, years |  |  |  |  | 5 years |  |
Aggregate construction cost/sales proceeds |  |  |  | $ 13,000,000 |  |  |
Aggregate rent expense paid |  |  |  | $ 900,000 |  |  |
Notice period on renewal of lease |  |  |  |  | 90 days |  |
Period of rights of refusal to leased facilities |  |  |  |  | 180 days |  |
Relationship with Universal Health Realty Income Trust | Texas |  |  |  |  |  |  |
Related Party Transaction [Line Items] |  |  |  |  |  |  |
Lease initial terms |  |  |  | 10 years |  |  |
Number of free-standing emergency departments to be acquired | Facility |  |  |  | 2 |  |  |
Number of renewal options at existing lease rates | RenewalOption |  |  |  | 6 |  |  |
Renewal options term at existing lease rates |  |  |  | 5 years |  |  |
Renewal options term at fair market lease rates |  |  |  | 5 years |  |  |
Relationship with Universal Health Realty Income Trust | Minimum |  |  |  |  |  |  |
Related Party Transaction [Line Items] |  |  |  |  |  |  |
Lease initial terms |  |  |  |  | 13 years |  |
Relationship with Universal Health Realty Income Trust | Maximum |  |  |  |  |  |  |
Related Party Transaction [Line Items] |  |  |  |  |  |  |
Lease initial terms |  |  |  |  | 15 years |  |

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